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G. R.- DELLENBAUGH.

STEAM ENGINE.

No. 409,155. Patented Aug. 13, 1889..

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3 Sheets-Sheet I (No Model.)

0. R. DELLENBAUGH. STEAM ENGINE.

No. 409,155. Patented Aug-13, 1889.

T h R I Q '6 b v V m W rrn (No Model.) 3 Sheets Sheet a.

' O. R. DELLENBAUGH.

STEAM ENGINE.

Patented Aug. 13, 1889.

N PETERS, Phnm-Lilhn n hm Wauhington. D. C.

UNITED STATES PATENT OFFICE.

THREE-FOURTHS TO WILLIAM H.

KING, ALL OF SAME PLACE.

HOOVER, CHARLES NEES, AND J. V.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 409,155, dated August13, 1889.

Application filed March 18, 1889. Serial No. 303,687. (No model.)

To all whom, it may concern:

Be it known that 1, CHARLES R. DELLEN- BAUCH, a citizen of the UnitedStates, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inSteam-Engines; and I do declare the following to be a full, clear, andexact description of the inven tion, such as will enable others skilledin the IO art to which it appertains to make and use the same.

This invention relates to certain novel improvements in what Idenominate automatic hi gh-speed rotary steam-engines, designed as I 5 amotive power for variouskinds of machinery, and especially for suchmachinery as requires reversal; and the nature of my invention consistsin a high-speed reversible rotary engine constructed as will be fullyunderstood from the following description and claims, taken inconnection with the annexed drawings, in which-- Figure 1 is a front endelevation of my improved engine complete. Fig. 2 is an eleva- 2 5 tionof the same end of the engine, partly in section, with the head or capplate and flywheel. Fig. 3 is a side view of Fig. 1. Fig. 4 is a centralor diametrical section taken longitudinally through the engine. Fig. 5is a perspective view of the piston-rin g detached from theengine-cylinder. Fig. 6 is a perspective view of the slotted frontinside plate shown in its place in Fig. 4. Figs. '7 and 8 are steamoscillating valves. Fig. 9 is a View of the slotted back inside plateshown in section on Fig. 1. Figs. 10, 11, and 12 show the constructionof a bucket or piston-stem and guide. Fig. 13 is a view of thecam-slotted plate which is applied on the rotative engineshaft foractuating the pistons. Fig. 14: is a diametrical section of the pistoncylinder or ring, the main shaft, and the spider casting to support thisbucket-cylinder. Figs. 15, 16, and. 17 are views of one of the compoundpistons, the sectional detail view, Fig. 17, showing the steel springsinterposed between the movable yoke and body of the piston. Fig. 18 is asection or part of the main shaft with its keyseat.

Referring to the annexed drawings by letter, A designates the maincylinder of my improved rotary engine; B, the back closed ring head; B,the front closed head thereof; C, the main rotative shaft, with itsreduced portion C; D, the ported and valve-boX casting on top 5 5 of themain cylinder, and A the leg or base portion thereof. These partsconstitute the main frame of the engine and are constructedsubstantially as I have represented in the annexed drawings, Figs. 1, 2,3, and 4.

The shaft C bears on one end a fly or balance wheel A which serves as abelt-wheel for transmitting motion to various kinds of machinery, andthis enlarged portion of said shafthas alongitudinalkey-seat a init,which receives a stud a that connects this portion of the shaft witha casting or spider E, the object of which is to aid in supporting thepiston cylinder or ring E, which latter, together with a circular insidehead F, is rigidly 7o bolted to the spider E, as clearly shown in Figs.4 and 14, and said head F is radially grooved at b b to afford guidesfor two sliding pistons G G, hereinafter described. On the inner side ofthe recessed portion of the head F is secured an annularly andperipherally packed ring F. At the opposite open end of the cylinder A,inside thereof, is the open ringhead B and also a packing-ring F whichlatter is inside of the ring-head B and is So slotted at Z) to affordguides for the back ends of the two buckets G G. The ring-head B isopen, and it is cast with a bracket B, which extends inside of thecylinder 1, and is constructed with a journal-box C for the sleeve Cwhich latter is rigidly secured to the journal-box C by a set-screw a(Shown in Fig. 4:.) Inside of the sleeve C the reduced portion C of themain shaft C rotates, and to the inner end of an enlargementof 0 thesaid sleeve a cam-disk H is rigidly secured, so that while the innercylinder E, with its head F and rings F W, is free to rotate with themain shaft, the said cam-disk H is stationary.

The cam-groove c in the face of the disk H is ellipsoidal, as shown inFig. 13, the upper portion being eccentric to the axis of the disk andthe lower portion concentric thereto, the object being to give theproper radial reoip- IOO roeation to the pistons G during theirrevolution, so that during the operation of the engine live steam willact on one side of these pistons and exhaust-steam escape from theopposite side, as will behereinafter explained. Both pistons are alikein form and construction. Each rectangular body (Z has a groove in itsouter edge and in its ends adapted to receive a waved spring (1', (shownin Fig. 17,) and this spring is covered by an angular packing (1 whichis preferably of hardened steel and constructed with hookedretainingends (1, adapted to engage with the body of the bucket at itsinner corners, as shown in Fig. 1.7. The packing (I) is springy, so thatby the expansion of the waved springs (Z the outer surface of thispacking will accommodate itself to and be held steam-tight against theinner surface of the cylinder A and the radial guiding-grooves for theends of the pistons.

On the portion 0' of the main shaft a cylindrical boss or collar isrigidly secured, havin g radial stemsff suitably secured into itsperiphery diametrically opposite each other, as shown in Fig. 2. Onthese pins or guides ff slide radially sleeves or tubes ff", which aresuitably secured at their outer ends to the inner edges of the twobuckets G G at the middle of their length. The sleeves f f have toes orstuds f which protrude into and engage these sleeves with the cam-groovec in the face of the stationary disk II, above de scribed. The sleeves ff pass freely, but

' steanrtight, through the wall of the cylinder E, so that when thiscylinder is rotated either to the right or left the radial moven'lentsof the pistons will coincide with the shape of the said cam-groove andwill impinge against the inner side of the cylinder E during theirrevolution.

At the upper end of the annular steamchamber surrounding the cylinder E,and in the median line of the main cylinder E, is a stationary block A",which subdivides said chamber into what may be termed a livesteamcompartment and an -exhanst-steam compartment, and the bucketssuccessively pass beneath this block they are fully retracted, as shownin Figs. 3 and l. The live steam therefore acts directlyandflxpansivelyon the buckets in their rotation.

The casting or valve-box I) above referred to is constructed with acylindrical valveehamher J, which is subdivided by a vertical partitiong, and with. one of these chambers the live-steam pipe I communicates,and with the other chamber the exhauststeam pipe I communicates, asclearly shown in Fig. 4.

Inside of the steam-box is applied an endwise-adjustable hollow valve V,which is ported at 71. It, and which is provided on one end with ahand-lever M, the upturned portion Nof which engages with a stem n onthe exposed end of the valve V, so that by vibrating said lever aboutits fulcrum at m the valve V can be moved endwise, the said lever beingheld after adjustment by a rack 1'.

(Shown in Fig. 3.) The said ported. valve V is applied inside of acylindrical receiver \V, which ported, as shown at '1' i 1' i 'i, Fig.4, the ports communicating with the steamspace between the cylinders AE, as indicated by dotted lines in Fig. 2.

In operation, when the valve V is adjusted so that one port 7t registerswith a port '6, steam will pass through port 71., through valve V itsport h, and through port '11 into the steanrspace 411, and rotate thecylinder E and its shaft 0 in one direction, the exhauststeam escapingthrough the ported valve-box and its outlet-pipe I \V hen valve V is adjusted so that the ports i 71, register, the engine will be reversed.

It is obvious that the valve V may be adjusted to admit a full head ofsteam or any desired quantity of steam, according to the speed requiredor the work to be performed.

liaving described my invention, what I claim is 1. The combination, withthe main cylinder, of the inner cylinder bearing radially-reciprocatingpistons, the grooved head and grooved ring at the ends of the innercylinder adapted for guiding the pistons, the spider E, connected to thehead F and inner cylinder and to the main shaft, the fixed cam-grooveddisk II, and the sleeves secured to the pistons and guided by stems, allas specified.

2. In a rotary engine, the combination, with the main cylinder, of theinternal cylinder having an open end and a closed end, the cylinder E,provided with radially-grooved flanges and the pistons working therein,the spider E, securing this cylinder to the main shaft, the sleeves f,secured to the said pistons and guided by rods f, the stationarycamgrooved disk ll, for actuating the said sleeves and pistons, and thebracket secured to the open head of the casing or main cylinder andaffording a journal for one end of the main shaft inside of the open-endcylinder E, all as specified.

3. In a rotary engine, the combination of the external cylinder A,having one end. open, the internal open-end cylinder E, rigidly securedto the outer cylinder, as specified, and provided with radially-groovedflanges having movable pistons, the stationary disk ll, having acam-groove in one face, the radiallymovable sleeves secured to the saidpistons, the guide-rodsf, secured to a boss on the main shaft C, thespider E, securing the cylinder E to the head thereof and itself socuredto the main shaft C, and the bracket 13*, affording a journal-box for asleeve all as specified.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES R. DELLEIBAUCII.

'Witnesses:

J'. W. KINNEAR, W. I. CRAIG.

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